3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * Add to readline cmdline-editing by
7 * JinHua Luo, GuangDong Linux Center, <luo.jinhua@gd-linux.com>
9 * See file CREDITS for list of people who contributed to this
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of
15 * the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
33 #ifdef CONFIG_MODEM_SUPPORT
34 #include <malloc.h> /* for free() prototype */
37 #ifdef CONFIG_SYS_HUSH_PARSER
43 #if defined(CONFIG_SILENT_CONSOLE) || defined(CONFIG_POST) || defined(CONFIG_CMDLINE_EDITING)
44 DECLARE_GLOBAL_DATA_PTR
;
48 * Board-specific Platform code can reimplement show_boot_progress () if needed
50 void inline __show_boot_progress (int val
) {}
51 void show_boot_progress (int val
) __attribute__((weak
, alias("__show_boot_progress")));
53 #if defined(CONFIG_BOOT_RETRY_TIME) && defined(CONFIG_RESET_TO_RETRY)
54 extern int do_reset (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[]); /* for do_reset() prototype */
57 extern int do_bootd (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[]);
59 #if defined(CONFIG_UPDATE_TFTP)
60 void update_tftp (void);
61 #endif /* CONFIG_UPDATE_TFTP */
63 #define MAX_DELAY_STOP_STR 32
65 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
66 static int abortboot(int);
71 char console_buffer
[CONFIG_SYS_CBSIZE
+ 1]; /* console I/O buffer */
73 static char * delete_char (char *buffer
, char *p
, int *colp
, int *np
, int plen
);
74 static char erase_seq
[] = "\b \b"; /* erase sequence */
75 static char tab_seq
[] = " "; /* used to expand TABs */
77 #ifdef CONFIG_BOOT_RETRY_TIME
78 static uint64_t endtime
= 0; /* must be set, default is instant timeout */
79 static int retry_time
= -1; /* -1 so can call readline before main_loop */
82 #define endtick(seconds) (get_ticks() + (uint64_t)(seconds) * get_tbclk())
84 #ifndef CONFIG_BOOT_RETRY_MIN
85 #define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME
88 #ifdef CONFIG_MODEM_SUPPORT
90 extern void mdm_init(void); /* defined in board.c */
93 /***************************************************************************
94 * Watch for 'delay' seconds for autoboot stop or autoboot delay string.
95 * returns: 0 - no key string, allow autoboot
96 * 1 - got key string, abort
98 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
99 # if defined(CONFIG_AUTOBOOT_KEYED)
100 static __inline__
int abortboot(int bootdelay
)
103 uint64_t etime
= endtick(bootdelay
);
110 { str
: getenv ("bootdelaykey"), retry
: 1 },
111 { str
: getenv ("bootdelaykey2"), retry
: 1 },
112 { str
: getenv ("bootstopkey"), retry
: 0 },
113 { str
: getenv ("bootstopkey2"), retry
: 0 },
116 char presskey
[MAX_DELAY_STOP_STR
];
117 u_int presskey_len
= 0;
118 u_int presskey_max
= 0;
121 # ifdef CONFIG_AUTOBOOT_PROMPT
122 printf(CONFIG_AUTOBOOT_PROMPT
);
125 # ifdef CONFIG_AUTOBOOT_DELAY_STR
126 if (delaykey
[0].str
== NULL
)
127 delaykey
[0].str
= CONFIG_AUTOBOOT_DELAY_STR
;
129 # ifdef CONFIG_AUTOBOOT_DELAY_STR2
130 if (delaykey
[1].str
== NULL
)
131 delaykey
[1].str
= CONFIG_AUTOBOOT_DELAY_STR2
;
133 # ifdef CONFIG_AUTOBOOT_STOP_STR
134 if (delaykey
[2].str
== NULL
)
135 delaykey
[2].str
= CONFIG_AUTOBOOT_STOP_STR
;
137 # ifdef CONFIG_AUTOBOOT_STOP_STR2
138 if (delaykey
[3].str
== NULL
)
139 delaykey
[3].str
= CONFIG_AUTOBOOT_STOP_STR2
;
142 for (i
= 0; i
< sizeof(delaykey
) / sizeof(delaykey
[0]); i
++) {
143 delaykey
[i
].len
= delaykey
[i
].str
== NULL
?
144 0 : strlen (delaykey
[i
].str
);
145 delaykey
[i
].len
= delaykey
[i
].len
> MAX_DELAY_STOP_STR
?
146 MAX_DELAY_STOP_STR
: delaykey
[i
].len
;
148 presskey_max
= presskey_max
> delaykey
[i
].len
?
149 presskey_max
: delaykey
[i
].len
;
152 printf("%s key:<%s>\n",
153 delaykey
[i
].retry
? "delay" : "stop",
154 delaykey
[i
].str
? delaykey
[i
].str
: "NULL");
158 /* In order to keep up with incoming data, check timeout only
163 if (presskey_len
< presskey_max
) {
164 presskey
[presskey_len
++] = getc();
167 for (i
= 0; i
< presskey_max
- 1; i
++)
168 presskey
[i
] = presskey
[i
+ 1];
170 presskey
[i
] = getc();
174 for (i
= 0; i
< sizeof(delaykey
) / sizeof(delaykey
[0]); i
++) {
175 if (delaykey
[i
].len
> 0 &&
176 presskey_len
>= delaykey
[i
].len
&&
177 memcmp (presskey
+ presskey_len
- delaykey
[i
].len
,
179 delaykey
[i
].len
) == 0) {
181 printf("got %skey\n",
182 delaykey
[i
].retry
? "delay" : "stop");
185 # ifdef CONFIG_BOOT_RETRY_TIME
186 /* don't retry auto boot */
187 if (! delaykey
[i
].retry
)
193 } while (!abort
&& get_ticks() <= etime
);
197 puts("key timeout\n");
200 #ifdef CONFIG_SILENT_CONSOLE
202 gd
->flags
&= ~GD_FLG_SILENT
;
208 # else /* !defined(CONFIG_AUTOBOOT_KEYED) */
210 #ifdef CONFIG_MENUKEY
211 static int menukey
= 0;
214 static __inline__
int abortboot(int bootdelay
)
218 #ifdef CONFIG_MENUPROMPT
219 printf(CONFIG_MENUPROMPT
);
221 printf("Hit any key to stop autoboot: %2d ", bootdelay
);
224 #if defined CONFIG_ZERO_BOOTDELAY_CHECK
226 * Check if key already pressed
227 * Don't check if bootdelay < 0
229 if (bootdelay
>= 0) {
230 if (tstc()) { /* we got a key press */
231 (void) getc(); /* consume input */
233 abort
= 1; /* don't auto boot */
238 while ((bootdelay
> 0) && (!abort
)) {
242 /* delay 100 * 10ms */
243 for (i
=0; !abort
&& i
<100; ++i
) {
244 if (tstc()) { /* we got a key press */
245 abort
= 1; /* don't auto boot */
246 bootdelay
= 0; /* no more delay */
247 # ifdef CONFIG_MENUKEY
250 (void) getc(); /* consume input */
257 printf("\b\b\b%2d ", bootdelay
);
262 #ifdef CONFIG_SILENT_CONSOLE
264 gd
->flags
&= ~GD_FLG_SILENT
;
269 # endif /* CONFIG_AUTOBOOT_KEYED */
270 #endif /* CONFIG_BOOTDELAY >= 0 */
272 /****************************************************************************/
274 void main_loop (void)
276 #ifndef CONFIG_SYS_HUSH_PARSER
277 static char lastcommand
[CONFIG_SYS_CBSIZE
] = { 0, };
283 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
287 #ifdef CONFIG_PREBOOT
290 #ifdef CONFIG_BOOTCOUNT_LIMIT
291 unsigned long bootcount
= 0;
292 unsigned long bootlimit
= 0;
295 #endif /* CONFIG_BOOTCOUNT_LIMIT */
297 #if defined(CONFIG_VFD) && defined(VFD_TEST_LOGO)
298 ulong bmp
= 0; /* default bitmap */
299 extern int trab_vfd (ulong bitmap
);
301 #ifdef CONFIG_MODEM_SUPPORT
303 bmp
= 1; /* alternate bitmap */
306 #endif /* CONFIG_VFD && VFD_TEST_LOGO */
308 #ifdef CONFIG_BOOTCOUNT_LIMIT
309 bootcount
= bootcount_load();
311 bootcount_store (bootcount
);
312 sprintf (bcs_set
, "%lu", bootcount
);
313 setenv ("bootcount", bcs_set
);
314 bcs
= getenv ("bootlimit");
315 bootlimit
= bcs
? simple_strtoul (bcs
, NULL
, 10) : 0;
316 #endif /* CONFIG_BOOTCOUNT_LIMIT */
318 #ifdef CONFIG_MODEM_SUPPORT
319 debug ("DEBUG: main_loop: do_mdm_init=%d\n", do_mdm_init
);
321 char *str
= strdup(getenv("mdm_cmd"));
322 setenv ("preboot", str
); /* set or delete definition */
325 mdm_init(); /* wait for modem connection */
327 #endif /* CONFIG_MODEM_SUPPORT */
329 #ifdef CONFIG_VERSION_VARIABLE
331 extern char version_string
[];
333 setenv ("ver", version_string
); /* set version variable */
335 #endif /* CONFIG_VERSION_VARIABLE */
337 #ifdef CONFIG_SYS_HUSH_PARSER
338 u_boot_hush_start ();
341 #if defined(CONFIG_HUSH_INIT_VAR)
345 #ifdef CONFIG_AUTO_COMPLETE
346 install_auto_complete();
349 #ifdef CONFIG_PREBOOT
350 if ((p
= getenv ("preboot")) != NULL
) {
351 # ifdef CONFIG_AUTOBOOT_KEYED
352 int prev
= disable_ctrlc(1); /* disable Control C checking */
355 # ifndef CONFIG_SYS_HUSH_PARSER
358 parse_string_outer(p
, FLAG_PARSE_SEMICOLON
|
359 FLAG_EXIT_FROM_LOOP
);
362 # ifdef CONFIG_AUTOBOOT_KEYED
363 disable_ctrlc(prev
); /* restore Control C checking */
366 #endif /* CONFIG_PREBOOT */
368 #if defined(CONFIG_UPDATE_TFTP)
370 #endif /* CONFIG_UPDATE_TFTP */
372 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
373 s
= getenv ("bootdelay");
374 bootdelay
= s
? (int)simple_strtol(s
, NULL
, 10) : CONFIG_BOOTDELAY
;
376 debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay
);
378 # ifdef CONFIG_BOOT_RETRY_TIME
380 # endif /* CONFIG_BOOT_RETRY_TIME */
383 if (gd
->flags
& GD_FLG_POSTFAIL
) {
384 s
= getenv("failbootcmd");
387 #endif /* CONFIG_POST */
388 #ifdef CONFIG_BOOTCOUNT_LIMIT
389 if (bootlimit
&& (bootcount
> bootlimit
)) {
390 printf ("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n",
391 (unsigned)bootlimit
);
392 s
= getenv ("altbootcmd");
395 #endif /* CONFIG_BOOTCOUNT_LIMIT */
396 s
= getenv ("bootcmd");
398 debug ("### main_loop: bootcmd=\"%s\"\n", s
? s
: "<UNDEFINED>");
400 if (bootdelay
>= 0 && s
&& !abortboot (bootdelay
)) {
401 # ifdef CONFIG_AUTOBOOT_KEYED
402 int prev
= disable_ctrlc(1); /* disable Control C checking */
405 # ifndef CONFIG_SYS_HUSH_PARSER
408 parse_string_outer(s
, FLAG_PARSE_SEMICOLON
|
409 FLAG_EXIT_FROM_LOOP
);
412 # ifdef CONFIG_AUTOBOOT_KEYED
413 disable_ctrlc(prev
); /* restore Control C checking */
417 # ifdef CONFIG_MENUKEY
418 if (menukey
== CONFIG_MENUKEY
) {
419 s
= getenv("menucmd");
421 # ifndef CONFIG_SYS_HUSH_PARSER
424 parse_string_outer(s
, FLAG_PARSE_SEMICOLON
|
425 FLAG_EXIT_FROM_LOOP
);
429 #endif /* CONFIG_MENUKEY */
430 #endif /* CONFIG_BOOTDELAY */
432 #ifdef CONFIG_AMIGAONEG3SE
434 extern void video_banner(void);
440 * Main Loop for Monitor Command Processing
442 #ifdef CONFIG_SYS_HUSH_PARSER
444 /* This point is never reached */
448 #ifdef CONFIG_BOOT_RETRY_TIME
450 /* Saw enough of a valid command to
451 * restart the timeout.
456 len
= readline (CONFIG_SYS_PROMPT
);
458 flag
= 0; /* assume no special flags for now */
460 strcpy (lastcommand
, console_buffer
);
462 flag
|= CMD_FLAG_REPEAT
;
463 #ifdef CONFIG_BOOT_RETRY_TIME
464 else if (len
== -2) {
465 /* -2 means timed out, retry autoboot
467 puts ("\nTimed out waiting for command\n");
468 # ifdef CONFIG_RESET_TO_RETRY
469 /* Reinit board to run initialization code again */
470 do_reset (NULL
, 0, 0, NULL
);
472 return; /* retry autoboot */
478 puts ("<INTERRUPT>\n");
480 rc
= run_command (lastcommand
, flag
);
483 /* invalid command or not repeatable, forget it */
487 #endif /*CONFIG_SYS_HUSH_PARSER*/
490 #ifdef CONFIG_BOOT_RETRY_TIME
491 /***************************************************************************
492 * initialize command line timeout
494 void init_cmd_timeout(void)
496 char *s
= getenv ("bootretry");
499 retry_time
= (int)simple_strtol(s
, NULL
, 10);
501 retry_time
= CONFIG_BOOT_RETRY_TIME
;
503 if (retry_time
>= 0 && retry_time
< CONFIG_BOOT_RETRY_MIN
)
504 retry_time
= CONFIG_BOOT_RETRY_MIN
;
507 /***************************************************************************
508 * reset command line timeout to retry_time seconds
510 void reset_cmd_timeout(void)
512 endtime
= endtick(retry_time
);
516 #ifdef CONFIG_CMDLINE_EDITING
519 * cmdline-editing related codes from vivi.
520 * Author: Janghoon Lyu <nandy@mizi.com>
523 #define putnstr(str,n) do { \
524 printf ("%.*s", (int)n, str); \
527 #define CTL_CH(c) ((c) - 'a' + 1)
529 #define MAX_CMDBUF_SIZE CONFIG_SYS_CBSIZE
531 #define CTL_BACKSPACE ('\b')
532 #define DEL ((char)255)
533 #define DEL7 ((char)127)
534 #define CREAD_HIST_CHAR ('!')
536 #define getcmd_putch(ch) putc(ch)
537 #define getcmd_getch() getc()
538 #define getcmd_cbeep() getcmd_putch('\a')
541 #define HIST_SIZE MAX_CMDBUF_SIZE
543 static int hist_max
= 0;
544 static int hist_add_idx
= 0;
545 static int hist_cur
= -1;
546 unsigned hist_num
= 0;
548 char* hist_list
[HIST_MAX
];
549 char hist_lines
[HIST_MAX
][HIST_SIZE
+ 1]; /* Save room for NULL */
551 #define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1)
553 static void hist_init(void)
562 for (i
= 0; i
< HIST_MAX
; i
++) {
563 hist_list
[i
] = hist_lines
[i
];
564 hist_list
[i
][0] = '\0';
568 static void cread_add_to_hist(char *line
)
570 strcpy(hist_list
[hist_add_idx
], line
);
572 if (++hist_add_idx
>= HIST_MAX
)
575 if (hist_add_idx
> hist_max
)
576 hist_max
= hist_add_idx
;
581 static char* hist_prev(void)
593 if (hist_cur
== hist_add_idx
) {
597 ret
= hist_list
[hist_cur
];
602 static char* hist_next(void)
609 if (hist_cur
== hist_add_idx
)
612 if (++hist_cur
> hist_max
)
615 if (hist_cur
== hist_add_idx
) {
618 ret
= hist_list
[hist_cur
];
623 #ifndef CONFIG_CMDLINE_EDITING
624 static void cread_print_hist_list(void)
629 n
= hist_num
- hist_max
;
631 i
= hist_add_idx
+ 1;
635 if (i
== hist_add_idx
)
637 printf("%s\n", hist_list
[i
]);
642 #endif /* CONFIG_CMDLINE_EDITING */
644 #define BEGINNING_OF_LINE() { \
646 getcmd_putch(CTL_BACKSPACE); \
651 #define ERASE_TO_EOL() { \
652 if (num < eol_num) { \
654 for (tmp = num; tmp < eol_num; tmp++) \
656 while (tmp-- > num) \
657 getcmd_putch(CTL_BACKSPACE); \
662 #define REFRESH_TO_EOL() { \
663 if (num < eol_num) { \
664 wlen = eol_num - num; \
665 putnstr(buf + num, wlen); \
670 static void cread_add_char(char ichar
, int insert
, unsigned long *num
,
671 unsigned long *eol_num
, char *buf
, unsigned long len
)
676 if (insert
|| *num
== *eol_num
) {
677 if (*eol_num
> len
- 1) {
685 wlen
= *eol_num
- *num
;
687 memmove(&buf
[*num
+1], &buf
[*num
], wlen
-1);
691 putnstr(buf
+ *num
, wlen
);
694 getcmd_putch(CTL_BACKSPACE
);
697 /* echo the character */
700 putnstr(buf
+ *num
, wlen
);
705 static void cread_add_str(char *str
, int strsize
, int insert
, unsigned long *num
,
706 unsigned long *eol_num
, char *buf
, unsigned long len
)
709 cread_add_char(*str
, insert
, num
, eol_num
, buf
, len
);
714 static int cread_line(const char *const prompt
, char *buf
, unsigned int *len
)
716 unsigned long num
= 0;
717 unsigned long eol_num
= 0;
723 int init_len
= strlen(buf
);
726 cread_add_str(buf
, init_len
, 1, &num
, &eol_num
, buf
, *len
);
729 #ifdef CONFIG_BOOT_RETRY_TIME
730 while (!tstc()) { /* while no incoming data */
731 if (retry_time
>= 0 && get_ticks() > endtime
)
732 return (-2); /* timed out */
736 ichar
= getcmd_getch();
738 if ((ichar
== '\n') || (ichar
== '\r')) {
744 * handle standard linux xterm esc sequences for arrow key, etc.
749 esc_save
[esc_len
] = ichar
;
752 cread_add_str(esc_save
, esc_len
, insert
,
753 &num
, &eol_num
, buf
, *len
);
761 case 'D': /* <- key */
765 case 'C': /* -> key */
768 break; /* pass off to ^F handler */
769 case 'H': /* Home key */
772 break; /* pass off to ^A handler */
773 case 'A': /* up arrow */
776 break; /* pass off to ^P handler */
777 case 'B': /* down arrow */
780 break; /* pass off to ^N handler */
782 esc_save
[esc_len
++] = ichar
;
783 cread_add_str(esc_save
, esc_len
, insert
,
784 &num
, &eol_num
, buf
, *len
);
793 esc_save
[esc_len
] = ichar
;
796 puts("impossible condition #876\n");
804 case CTL_CH('c'): /* ^C - break */
805 *buf
= '\0'; /* discard input */
809 getcmd_putch(buf
[num
]);
815 getcmd_putch(CTL_BACKSPACE
);
821 wlen
= eol_num
- num
- 1;
823 memmove(&buf
[num
], &buf
[num
+1], wlen
);
824 putnstr(buf
+ num
, wlen
);
829 getcmd_putch(CTL_BACKSPACE
);
852 wlen
= eol_num
- num
;
854 memmove(&buf
[num
], &buf
[num
+1], wlen
);
855 getcmd_putch(CTL_BACKSPACE
);
856 putnstr(buf
+ num
, wlen
);
859 getcmd_putch(CTL_BACKSPACE
);
871 if (ichar
== CTL_CH('p'))
881 /* nuke the current line */
885 /* erase to end of line */
888 /* copy new line into place and display */
890 eol_num
= strlen(buf
);
894 #ifdef CONFIG_AUTO_COMPLETE
898 /* do not autocomplete when in the middle */
905 col
= strlen(prompt
) + eol_num
;
907 if (cmd_auto_complete(prompt
, buf
, &num2
, &col
)) {
916 cread_add_char(ichar
, insert
, &num
, &eol_num
, buf
, *len
);
921 buf
[eol_num
] = '\0'; /* lose the newline */
923 if (buf
[0] && buf
[0] != CREAD_HIST_CHAR
)
924 cread_add_to_hist(buf
);
925 hist_cur
= hist_add_idx
;
930 #endif /* CONFIG_CMDLINE_EDITING */
932 /****************************************************************************/
935 * Prompt for input and read a line.
936 * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0,
937 * time out when time goes past endtime (timebase time in ticks).
938 * Return: number of read characters
942 int readline (const char *const prompt
)
945 * If console_buffer isn't 0-length the user will be prompted to modify
946 * it instead of entering it from scratch as desired.
948 console_buffer
[0] = '\0';
950 return readline_into_buffer(prompt
, console_buffer
);
954 int readline_into_buffer (const char *const prompt
, char * buffer
)
957 #ifdef CONFIG_CMDLINE_EDITING
958 unsigned int len
=MAX_CMDBUF_SIZE
;
960 static int initted
= 0;
963 * History uses a global array which is not
964 * writable until after relocation to RAM.
965 * Revert to non-history version if still
966 * running from flash.
968 if (gd
->flags
& GD_FLG_RELOC
) {
977 rc
= cread_line(prompt
, p
, &len
);
978 return rc
< 0 ? rc
: len
;
981 #endif /* CONFIG_CMDLINE_EDITING */
983 int n
= 0; /* buffer index */
984 int plen
= 0; /* prompt length */
985 int col
; /* output column cnt */
990 plen
= strlen (prompt
);
996 #ifdef CONFIG_BOOT_RETRY_TIME
997 while (!tstc()) { /* while no incoming data */
998 if (retry_time
>= 0 && get_ticks() > endtime
)
999 return (-2); /* timed out */
1002 WATCHDOG_RESET(); /* Trigger watchdog, if needed */
1004 #ifdef CONFIG_SHOW_ACTIVITY
1006 extern void show_activity(int arg
);
1013 * Special character handling
1016 case '\r': /* Enter */
1022 case '\0': /* nul */
1025 case 0x03: /* ^C - break */
1026 p_buf
[0] = '\0'; /* discard input */
1029 case 0x15: /* ^U - erase line */
1030 while (col
> plen
) {
1038 case 0x17: /* ^W - erase word */
1039 p
=delete_char(p_buf
, p
, &col
, &n
, plen
);
1040 while ((n
> 0) && (*p
!= ' ')) {
1041 p
=delete_char(p_buf
, p
, &col
, &n
, plen
);
1045 case 0x08: /* ^H - backspace */
1046 case 0x7F: /* DEL - backspace */
1047 p
=delete_char(p_buf
, p
, &col
, &n
, plen
);
1052 * Must be a normal character then
1054 if (n
< CONFIG_SYS_CBSIZE
-2) {
1055 if (c
== '\t') { /* expand TABs */
1056 #ifdef CONFIG_AUTO_COMPLETE
1057 /* if auto completion triggered just continue */
1059 if (cmd_auto_complete(prompt
, console_buffer
, &n
, &col
)) {
1060 p
= p_buf
+ n
; /* reset */
1064 puts (tab_seq
+(col
&07));
1065 col
+= 8 - (col
&07);
1067 ++col
; /* echo input */
1072 } else { /* Buffer full */
1077 #ifdef CONFIG_CMDLINE_EDITING
1082 /****************************************************************************/
1084 static char * delete_char (char *buffer
, char *p
, int *colp
, int *np
, int plen
)
1092 if (*(--p
) == '\t') { /* will retype the whole line */
1093 while (*colp
> plen
) {
1097 for (s
=buffer
; s
<p
; ++s
) {
1099 puts (tab_seq
+((*colp
) & 07));
1100 *colp
+= 8 - ((*colp
) & 07);
1114 /****************************************************************************/
1116 int parse_line (char *line
, char *argv
[])
1121 printf ("parse_line: \"%s\"\n", line
);
1123 while (nargs
< CONFIG_SYS_MAXARGS
) {
1125 /* skip any white space */
1126 while ((*line
== ' ') || (*line
== '\t')) {
1130 if (*line
== '\0') { /* end of line, no more args */
1133 printf ("parse_line: nargs=%d\n", nargs
);
1138 argv
[nargs
++] = line
; /* begin of argument string */
1140 /* find end of string */
1141 while (*line
&& (*line
!= ' ') && (*line
!= '\t')) {
1145 if (*line
== '\0') { /* end of line, no more args */
1148 printf ("parse_line: nargs=%d\n", nargs
);
1153 *line
++ = '\0'; /* terminate current arg */
1156 printf ("** Too many args (max. %d) **\n", CONFIG_SYS_MAXARGS
);
1159 printf ("parse_line: nargs=%d\n", nargs
);
1164 /****************************************************************************/
1166 static void process_macros (const char *input
, char *output
)
1169 const char *varname_start
= NULL
;
1170 int inputcnt
= strlen (input
);
1171 int outputcnt
= CONFIG_SYS_CBSIZE
;
1172 int state
= 0; /* 0 = waiting for '$' */
1174 /* 1 = waiting for '(' or '{' */
1175 /* 2 = waiting for ')' or '}' */
1176 /* 3 = waiting for ''' */
1178 char *output_start
= output
;
1180 printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen (input
),
1184 prev
= '\0'; /* previous character */
1186 while (inputcnt
&& outputcnt
) {
1191 /* remove one level of escape characters */
1192 if ((c
== '\\') && (prev
!= '\\')) {
1193 if (inputcnt
-- == 0)
1201 case 0: /* Waiting for (unescaped) $ */
1202 if ((c
== '\'') && (prev
!= '\\')) {
1206 if ((c
== '$') && (prev
!= '\\')) {
1213 case 1: /* Waiting for ( */
1214 if (c
== '(' || c
== '{') {
1216 varname_start
= input
;
1228 case 2: /* Waiting for ) */
1229 if (c
== ')' || c
== '}') {
1231 char envname
[CONFIG_SYS_CBSIZE
], *envval
;
1232 int envcnt
= input
- varname_start
- 1; /* Varname # of chars */
1234 /* Get the varname */
1235 for (i
= 0; i
< envcnt
; i
++) {
1236 envname
[i
] = varname_start
[i
];
1241 envval
= getenv (envname
);
1243 /* Copy into the line if it exists */
1245 while ((*envval
) && outputcnt
) {
1246 *(output
++) = *(envval
++);
1249 /* Look for another '$' */
1253 case 3: /* Waiting for ' */
1254 if ((c
== '\'') && (prev
!= '\\')) {
1271 printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n",
1272 strlen (output_start
), output_start
);
1276 /****************************************************************************
1278 * 1 - command executed, repeatable
1279 * 0 - command executed but not repeatable, interrupted commands are
1280 * always considered not repeatable
1281 * -1 - not executed (unrecognized, bootd recursion or too many args)
1282 * (If cmd is NULL or "" or longer than CONFIG_SYS_CBSIZE-1 it is
1283 * considered unrecognized)
1287 * We must create a temporary copy of the command since the command we get
1288 * may be the result from getenv(), which returns a pointer directly to
1289 * the environment data, which may change magicly when the command we run
1290 * creates or modifies environment variables (like "bootp" does).
1293 int run_command (const char *cmd
, int flag
)
1296 char cmdbuf
[CONFIG_SYS_CBSIZE
]; /* working copy of cmd */
1297 char *token
; /* start of token in cmdbuf */
1298 char *sep
; /* end of token (separator) in cmdbuf */
1299 char finaltoken
[CONFIG_SYS_CBSIZE
];
1301 char *argv
[CONFIG_SYS_MAXARGS
+ 1]; /* NULL terminated */
1307 printf ("[RUN_COMMAND] cmd[%p]=\"", cmd
);
1308 puts (cmd
? cmd
: "NULL"); /* use puts - string may be loooong */
1312 clear_ctrlc(); /* forget any previous Control C */
1314 if (!cmd
|| !*cmd
) {
1315 return -1; /* empty command */
1318 if (strlen(cmd
) >= CONFIG_SYS_CBSIZE
) {
1319 puts ("## Command too long!\n");
1323 strcpy (cmdbuf
, cmd
);
1325 /* Process separators and check for invalid
1326 * repeatable commands
1330 printf ("[PROCESS_SEPARATORS] %s\n", cmd
);
1335 * Find separator, or string end
1336 * Allow simple escape of ';' by writing "\;"
1338 for (inquotes
= 0, sep
= str
; *sep
; sep
++) {
1344 (*sep
== ';') && /* separator */
1345 ( sep
!= str
) && /* past string start */
1346 (*(sep
-1) != '\\')) /* and NOT escaped */
1351 * Limit the token to data between separators
1355 str
= sep
+ 1; /* start of command for next pass */
1359 str
= sep
; /* no more commands for next pass */
1361 printf ("token: \"%s\"\n", token
);
1364 /* find macros in this token and replace them */
1365 process_macros (token
, finaltoken
);
1367 /* Extract arguments */
1368 if ((argc
= parse_line (finaltoken
, argv
)) == 0) {
1369 rc
= -1; /* no command at all */
1373 /* Look up command in command table */
1374 if ((cmdtp
= find_cmd(argv
[0])) == NULL
) {
1375 printf ("Unknown command '%s' - try 'help'\n", argv
[0]);
1376 rc
= -1; /* give up after bad command */
1380 /* found - check max args */
1381 if (argc
> cmdtp
->maxargs
) {
1387 #if defined(CONFIG_CMD_BOOTD)
1388 /* avoid "bootd" recursion */
1389 if (cmdtp
->cmd
== do_bootd
) {
1391 printf ("[%s]\n", finaltoken
);
1393 if (flag
& CMD_FLAG_BOOTD
) {
1394 puts ("'bootd' recursion detected\n");
1398 flag
|= CMD_FLAG_BOOTD
;
1403 /* OK - call function to do the command */
1404 if ((cmdtp
->cmd
) (cmdtp
, flag
, argc
, argv
) != 0) {
1408 repeatable
&= cmdtp
->repeatable
;
1410 /* Did the user stop this? */
1412 return -1; /* if stopped then not repeatable */
1415 return rc
? rc
: repeatable
;
1418 /****************************************************************************/
1420 #if defined(CONFIG_CMD_RUN)
1421 int do_run (cmd_tbl_t
* cmdtp
, int flag
, int argc
, char *argv
[])
1430 for (i
=1; i
<argc
; ++i
) {
1433 if ((arg
= getenv (argv
[i
])) == NULL
) {
1434 printf ("## Error: \"%s\" not defined\n", argv
[i
]);
1437 #ifndef CONFIG_SYS_HUSH_PARSER
1438 if (run_command (arg
, flag
) == -1)
1441 if (parse_string_outer(arg
,
1442 FLAG_PARSE_SEMICOLON
| FLAG_EXIT_FROM_LOOP
) != 0)